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Is this correct?

  1. May 17, 2007 #1
    Is this correct??

    The rate r at which people become ill with the flu at time t days after
    an epidemic begins is given by r = 1000 t e−t/20 people per day. How many
    people become ill with the flu during the first 10 days of this epidemic?

    take the integral from 0 to 10 of (1000t e^(-t/20)) and then plug in 10 and 0. Then subtract.. getting

  2. jcsd
  3. May 17, 2007 #2


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    Science Advisor

    Yes, assuming the information given is what you have said, that's correct. (More correctly,since the function you give is continuous while the number of people is discrete, its the "best approximation".)
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